| 摘要 |
The invention relates to a device for optically measuring the curvature of a rotor blade (18) of a wind power plant (1), wherein said rotor blade is fixed at the blade root (23) thereof to a rotor hub (8) of a rotor (6), comprising at least one light-emitting outer marking (33) fixed to the rotor blade (18) at a distance from the blade root (23), at least one camera (27) which is fixed to the rotor (6) and which captures the light (35) emitted from the outer marking (23) and provides first location information in dependence on the relative position of the camera (27) with respect to the outer marking (33), an evaluating device (37) coupled to the camera (27), and a position detection means which detects the relative location of the camera (27) with respect to the blade root (23) and provides second location information in dependence on said relative location, wherein the evaluating device (37) determines at least one variable characterising the curvature of the rotor blade (18) while evaluating the position information. |
